Purple Valves
PRPLZ178

Casting Pressure Seal Flanged Swing Check Valve 900LB

A pressure-seal cast steel swing check valve rated to Class 900 that automatically stops reverse flow in high-pressure lines.

Size1/2" to 24"PressureANSI Class 150 to 1500PortFull portBodyPressure-seal swing check
Overview

Built for elevated-pressure service, this cast steel swing check valve uses a pressure-seal bonnet that tightens its seal as line pressure rises, making it dependable in demanding power and process duty. The swinging disc opens with forward flow and closes automatically on reversal to protect pumps and upstream equipment. Flanged end connections and robust cast steel construction make it a strong choice for steam, hydrocarbon and high-temperature pipelines through Class 900 and beyond.

Technical Detail

Specifications

Size Range
1/2" to 24"
Pressure Rating
ANSI Class 150 to 1500
Temperature Range
-46°C to 232°C (-50°F to 450°F)
End Connections
Flanged Raised Face / RTJ
Body Material
Cast steel (WCB, LCC, LCB, CF8M, 2205 and special grades)
Ball / Disc / Wedge Material
Hinged swing disc
Seat Material
Metal / API trims (Trim 1, 5, 8, 12, 16)
Port Type
Full port
Body Style
Pressure-seal swing check
Operation
Automatic (non-return)
Applications
High-pressure steam, power generation and hydrocarbon process pipelines
Design Standard
API 6D, API 594, BS 1868, BS EN 13709
Testing Standard
API 598
Face to Face Standard
ASME B16.10
At a Glance

Key Features

  • Pressure-seal bonnet for high-pressure integrity
  • Automatic swing-disc non-return action
  • Flanged raised face or RTJ ends
  • Cast steel construction
  • Suited to Class 900 service

Options

  • NACE compliant trim
  • Special materials on request
  • Soft or metal seating

Standards & Certifications

  • API 598
  • NACE compliant (optional)
  • API 6D
Reference

Dimensions

900 LB
Sizes L / L1 H
2″ 14-1/2 (368) 9-1/4 (235)
3″ 15 (381) 9-1/2 (241)
4″ 18 (457) 11 (279)
6″ 24 (610) 13-3/4 (349)
8″ 29 (737) 18 (457)
1500 LB
Sizes L / L1 H
2″ 14-1/2 (368) 8-3/8 (213)
3″ 18-1/2 (470) 9-1/4 (235)
4″ 21-1/2 (546) 11 (279)
6″ 27-3/4 (705) 13-3/4 (349)
8″ 32-3/4 (832) 18 (457)
2500 LB
Sizes L / L1 H
2″ 17-3/4 (451) 13 (330)
3″ 22-3/4 (578) 16 (406)
4″ 26-1/2 (673) 16 (406)
6″ 36 (914) 23 (584)
8″ 40-1/4 (1022) 28-1/2 (724)
Contact

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